Flame Ionization Detector (FID) Problems

This quick guide considers the most common problems encountered with an FID. In order to recognize the problems the associated chromatographic symptoms will be detailed. Procedures for remedying the problems and preventative maintenance to avoid these issues will also be discussed.

Topics include:

• How an FID works
• Incorrect gas stoichiometry
• Jet contamination and blockage
• Poorly positioned column
• Shorted detector
• Solvent extinguishing flame
• Problem baselines
• FID maintenance